Clean Energy Capability Portfolio | Grid Transformation |
Multi-Phase Machine Drives using Coupled-
Coil Inductor Outputs
A five-phase , three-level pulse-width modulated voltage source inverter and associated modulation techniques for multi-phase machine drives . The inverter employs a coupled inductor in each phase-leg to provide three-level output voltages , using only two switches per leg . |
Competitive Advantage • Compared with the popular three-level neutral-point clamped inverter , the coupled inductor inverter uses fewer switching devices , has no dead-time and associated distortion , and the DC-link capacitor voltage does not need to be balanced
• Extensive experience in the assessment and design of space vector modulation strategies
• Invention and modification of two carrier-based pulse-width modulation techniques to reduce the common-mode voltage for multi-phase inverters
Impact • The establishment of mathematical models of coupled inductors , total inverter current and current stress on DC-link capacitors , provides insight into the way coupled inductors impact system efficiency and current stress in DC-link capacitors
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Our Collaborators • Shandong BOFA Power Machinery
• Motorica
More Information Professor John Fletcher
School of Electrical Engineering and Telecommunications
T : + 61 2 9385 6007
E : john . fletcher @ unsw . edu . au
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Capabilities and Facilities |
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• Electrical machine design experience |
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• Multi-phase machine design techniques |
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• Multi-phase drives and controls |
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• Low-speed , high-torque and high-speed load machines |
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